This type of Appy-Bot will suck in the surrounding liquids and wash out the obstruction.

This type of Appy-Bot will pick away at the obstruction with graspers.
Obstructions are approximately one-fourth inch in diameter. Due to their nanosize, there will have to be millions to billions of Appy-Bots to complete the removal. The nanobots will be powered by glucose and oxygen that enter through spiracles.